1、BRITISH STANDARDBS EN 55020:2007Sound and television broadcast receivers and associated equipment Immunity characteristics Limits and methods of measurementICS 33.100.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40
2、g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A11:2011,QFRUSRUDWLQJFRUULJHQGD-DQXDUHFHPEHUDQG0DBS EN 55020:2007 +A12:2016Incorporating corrigenda January 2010, December 2010 and May 2014BS EN 55020:2007+A12:2016ISBN 978 0 580 91650 2Amendments/corrigenda issued since publicat
3、ionDate Comments31 January 2010 Addition of CENELEC interpretation sheet 1 (June 2009) in National Annex NA31 December 2010 Addition of CENELEC interpretation sheet 2 (August 2010) in National Annex NA30 November 2011 Implementation of CENELEC amendment A11:2011: Information added to Section 4.7, Ta
4、ble 1531 May 2014 Addition of CENELEC interpretation sheet 3 (February 2014) in National Annex NA29 February 2016 Implementation of CENELEC amendment A12:2016This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2007 The British Standar
5、ds Institution 2016. Published by BSI Standards Limited 2016National forewordThis British Standard is the UK implementation of EN 55020:2007+A12:2016. It is derived from CISPR 20:2006. It supersedes BS EN 55020:2007+A11:2011, which will be withdrawn on 4 January 2019.Where a common modification has
6、been introduced by CENELEC amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC amendment A12 are indicated by /0.National Annex NA (informative) reproduces CENELEC interpretation sheets 1 (June 2009) and 2 (August 2010).CENELEC Interpret
7、ation sheet 1 (June 2009) affects Tables 1, 2, 9, 10, 11 and 15 as it provides an interpretation of the immunity requirements for digital only receivers.CENELEC Interpretation sheet 2 (August 2010) affects Annex I, Clause I.7 of this standard, as it provides an interpretation of the immunity require
8、ments for a receiver with separate RF input parts for Analogue/ Digital Terrestrial and Digital Satellite reception.CENELEC Interpretation sheet 3 (February 2014) affects Table 15, as it provides an interpretation of the set-up for the RF e.m field immunity test in the frequency range 790-862 MHz.Th
9、e content of these interpretation sheets have been appended by way of a National Annex found at the end of this document.The UK participation in its preparation was entrusted by Technical Committee GEL/210, EMC Policy committee, to Subcommittee GEL/210/11, EMC Standards Committee.A list of organizat
10、ions represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligation
11、s.EUROPEAN STANDARD EN 55020:2007+A11NORME EUROPENNE EUROPISCHE NORM CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat rue de Stassart 35, B - 1050 Brussels 2007 CENELEC
12、 - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 55020:2007 E ICS 33.100.20 English version Sound and television broadcast receivers and associated equipment - Immunity characteristics - Limits and methods of measurement (CISPR 20:2006) R
13、cepteurs de radiodiffusion et de tlvision et quipements associs - Caractristiques dimmunit - Limites et mthodes de mesure (CISPR 20:2006) Ton- und Fernseh-Rundfunkempfnger und verwandte Gerte der Unterhaltungselektronik - Strfestigkeitseigenschaften - Grenzwerte und Prfverfahren (CISPR 20:2006) This
14、 European Standard was approved by CENELEC on 2006-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical refe
15、rences concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC
16、member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icel
17、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. October 2011EN 55020:2007+A12February 2016Foreword The text of document CISPR/I/200/FDIS, future edition 6 of CISPR 20
18、, prepared by CISPR SC I, Electromagnetic compatibility of information technology equipment, multimedia equipment and receivers, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 55020 on 2006-12-01. This European Standard supersedes EN 55020:2002 (+ corrigendum Septem
19、ber 2005) + A1:2003 (+ corrigendum September 2005) + A2:2005 + IS1:2007 + IS2:2007. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-09-01 latest date by which the nationa
20、l standards conflicting with the EN have to be withdrawn (dow) 2009-12-01 This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directives 89/336/EEC, 2004/108/EC and 1999/5
21、/EC. See Annex ZZ. Annexes ZA and ZZ have been added by CENELEC. _ Endorsement notice The text of the International Standard CISPR 20:2006 approved by CENELEC as a European Standard without any modification. _ 2 Foreword to amendment A11 This document (EN 55020:2007/A11:2011) has been prepared by CL
22、C/TC210, “Electromagnetic compatibility (EMC)“. The following dates are fixed: latest date by which the amendment has to be implementedat national level by publication of an identical national standard or by endorsement (dop) 2012-06-27 latest date by which the national standards conflicting with th
23、e amendment have to be withdrawn (dow) 2013-01-01 _ BS EN 55020:2007+A11:2011 EN 55020:2007+A11:2011 (E)BS EN 55020:2007+A12:2016EN 55020:2007+A12:2016- 2 -BS EN 55020:2007+A12:2016EN 55020:2007+A12:2016- 3 -This document (EN 55020:2007/A12:2016) has been prepared by CLC/TC 210 “Electromagnetic comp
24、atibility (EMC)“. The following dates are fixed: x latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-01-04 x latest date by which the national standards conflicting with the document have to be with
25、drawn (dow) 2019-01-04 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELE
26、C by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s), see informative Annex ZZ, which is an integral part of EN 55020:2007. Foreword to amendment A12CONTENTS 1 Scope and object7 2 Norma
27、tive references .8 3 Terms, definitions and abbreviations 8 3.1 Terms and definitions 8 3.2 Abbreviations 11 4 Immunity requirements .11 4.1 Performance criteria 11 4.2 Applicability.13 4.3 Immunity requirements for the antenna input connector.13 4.4 Immunity requirements for audio connectors .21 4.
28、5 Immunity requirements for AC mains power connectors.22 4.6 Requirements for immunity to RF voltages 22 4.7 Immunity requirements for the enclosure port 24 5 Immunity measurements.28 5.1 General conditions during testing 28 5.2 Performance assessment 29 5.3 Measurement of input immunity .31 5.4 Mea
29、surement of immunity to RF voltage (common mode) at antenna terminal .32 5.5 Measurement of screening effectiveness .34 5.6 Measurement of electrical transients .35 5.7 Measurement of immunity to induced voltages 35 5.8 Measurement of immunity from radiated fields.38 5.9 Measurement of electrostatic
30、 discharge.41 6 Interpretation of CISPR immunity limits 41 6.1 Significance of a CISPR limit .41 6.2 Compliance with limits on a statistical basis 41 Annex A (normative) Specification of the test-TV-set . 51 Annex B (normative) Specification of filters and weighting network 52 Annex C (normative) Sp
31、ecification of coupling units and of low-pass filter 54 Annex D (normative) Matching networks and mains stop filter. 61 Annex E (normative) Construction information for the open stripline and for the mains and loudspeaker band-stop filter . 63 Annex F (normative) Calibration of the open stripline .
32、69 Annex G (normative) Ferrite core sizes and materials 72 Annex H (informative) Frequency bands 73 Annex I (normative) Broadcast receivers for digital signals . 74 Annex J (informative) Specification of the wanted signal . 78 Annex K (informative) Objective evaluation of picture quality 83 Bibliogr
33、aphy 87 Annex ZA (normative) Normative references to international publications with their corresponding European publications 88 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives 90 3 Annex NA (informative) CENELEC Interpretation Sheet 1,June 2009 91BS EN 55020:2007+A11:201
34、1 EN 55020:2007+A11:2011 (E), Interpretation Sheet 2, August 2010 and Interpretation Sheet 3, February 2014BS EN 55020:2007+A12:2016EN 55020:2007+A12:2016- 4 -Figure 1 Examples of ports 11 Figure 2 Audio power output measurement 42 Figure 3 Measuring set-up for input immunity measurement of sound br
35、oadcast receivers.42 Figure 4 Measuring set-up for input immunity measurement of television receivers and video tape equipment.43 Figure 5 General principle of the current injection method44 Figure 6 Measurement principle for the immunity from conducted currents.45 Figure 7 Measuring set-up for the
36、screening effectiveness.46 Figure 8 Measurement of immunity from induced voltages at mains input, headphones, speakers, audio output, audio input .47 Figure 9 Example of the arrangement of an open stripline TEM device in combination with absorbing plates inside a screened room with dimensions of 3 m
37、 x 3,5 m48 Figure 10 Measurement of the immunity of broadcast receivers from radiated fields in the frequency range 0,15 MHz to 150 MHz in an open stripline .49 Figure 11 Measurement of the immunity from RF e.m. field, keyed carrier, using a dummy GSM portable telephone .50 Figure B.1 Band-pass filt
38、er 0,5 kHz to 3 kHz52 Figure C.1 Coupling unit type AC (for coaxial antenna input) .57 Figure C.2 Coupling unit type MC (for mains lead) .58 Figure C.3 Coupling unit type LC (for loudspeaker leads) 59 Figure C.4 Coupling unit type Sr with load resistances.59 Figure C.5 Measuring set-up to check the
39、insertion loss of the coupling units in the frequency range 30 MHz to 150 MHz 60 Figure D.1 RC network for audio inputs (RCi) .61 Figure D.2 RC network for audio outputs (RCo) .61 Figure D.3 Mains stop filter (MSF) .62 Figure E.1 Open stripline TEM device, basic configuration with matching network a
40、nd terminating impedance.63 Figure E.2 Overview of an open stripline TEM device.64 Figure E.3 Constructional details of an open stripline, TEM device 65 Figure E.4 Supplementary constructional details of the open stripline TEM device.66 Figure E.5 Matching network MN .66 Figure E.6 Terminating imped
41、ance TI 66 Figure E.7 Band-stop filter type MBS circuit (for mains connection) .67 Figure E.8 Band-stop filter type LBS (for loudspeaker connection).68 Figure F.1 Circuit arrangement for calibration of the measuring set-up.70 Figure F.2 Example of additional arrangement for enquiry of the calibratio
42、n curve .71 Figure F.3 Calibration curve.71 Figure K.1 Measuring set-up for objective picture evaluation for EUT equipped with a display.86 Figure K.2 Measuring set-up for objective picture evaluation for EUT without a display86 4 BS EN 55020:2007+A11:2011 EN 55020:2007+A11:2011 (E)BS EN 55020:2007+
43、A12:2016EN 55020:2007+A12:2016- 5 -Table 1 Survey (non exhaustive) of receiver and associated equipment types, including the appropriate parts of multifunction equipment10 Table 2 Antenna port .14 Table 3 Limits of input immunity from unwanted signals outside the FM range (see also 5.3.1.2 for the w
44、anted signal) 14 Table 4 Limits of input immunity from unwanted signals inside the FM range (see also 5.3.1.3 for the wanted signal) 15 Table 5 Limits of input immunity of television receivers for systems B, G and I .16 Table 5a Limits of input immunity of television receivers for system L 17 Table
45、5b Limits of input immunity of television receivers for systems D-SECAM, K-SECAM (used in Russia).17 Table 5c Limits of input immunity of television receivers for systems PAL D/K (used in central Europe) .18 Table 5d Limits of input immunity of television receivers for system M-NTSC with a 58,75 MHz
46、 IF video carrier (used in Japan)18 Table 6 Limits of input immunity of television receivers 19 Table 7 Limits of input immunity of satellite television receivers.19 Table 7a Limits of input immunity of satellite television receivers (Used in Japan, Korea) 20 Table 8 Limits of immunity to RF voltage
47、s (common mode) of antenna terminals .20 Table 8a Limits of screening effectiveness of the coaxial antenna terminals 21 Table 9 Loudspeakers/headphone output port21 Table 10 Audio input/output port (excluding loudspeaker and headphone) .22 Table 11 Power input port 22 Table 12 Limits of immunity to
48、RF voltages of mains, loudspeaker and headphone terminals.23 Table 13 Limits of immunity to RF voltages of audio input and output terminals (except loudspeaker and headphone terminals) 23 Table 14 Additional unwanted signal frequencies to be excluded in tests on sound and television reception functi
49、ons. 24 Table 15 Enclosure port.24 Table 16 Limits of immunity to ambient electromagnetic fields of FM reception functions of sound receivers .25 Table 17 Limits of immunity to ambient electromagnetic fields of television receivers operating in the reception function 26 Table 18 Limits of immunity to ambien
